diff --git a/src/blocks/Header/Header.tsx b/src/blocks/Header/Header.tsx
index 3ebe6e29a..79dd74c10 100644
--- a/src/blocks/Header/Header.tsx
+++ b/src/blocks/Header/Header.tsx
@@ -162,6 +162,7 @@ export const HeaderBlock = (props: WithChildren<HeaderBlockFullProps>) => {
                                                         size="xl"
                                                         extraProps={{
                                                             'aria-describedby': titleId,
+                                                            ...button.extraProps,
                                                         }}
                                                         {...button}
                                                     />
diff --git a/src/models/constructor-items/blocks.ts b/src/models/constructor-items/blocks.ts
index 19e01c248..cd7465447 100644
--- a/src/models/constructor-items/blocks.ts
+++ b/src/models/constructor-items/blocks.ts
@@ -141,7 +141,7 @@ export interface HeaderBlockProps {
     title: string;
     overtitle?: string;
     description?: string;
-    buttons?: Pick<ButtonProps, 'url' | 'text' | 'theme' | 'primary' | 'size'>[];
+    buttons?: Pick<ButtonProps, 'url' | 'text' | 'theme' | 'primary' | 'size' | 'extraProps'>[];
     width?: HeaderWidth;
     /** @deprecated imageSize now depends on width */
     imageSize?: HeaderImageSize;
diff --git a/src/sub-blocks/Content/Content.tsx b/src/sub-blocks/Content/Content.tsx
index 587c55ab3..bc64177e0 100644
--- a/src/sub-blocks/Content/Content.tsx
+++ b/src/sub-blocks/Content/Content.tsx
@@ -124,6 +124,7 @@ const Content = (props: ContentProps) => {
                             qa={qaAttributes.link}
                             extraProps={{
                                 'aria-describedby': link.urlTitle ? undefined : titleId,
+                                ...link.extraProps,
                             }}
                         />
                     ))}
@@ -140,6 +141,7 @@ const Content = (props: ContentProps) => {
                             qa={qaAttributes.button}
                             extraProps={{
                                 'aria-describedby': item.urlTitle ? undefined : titleId,
+                                ...item.extraProps,
                             }}
                         />
                     ))}